Excimer emission and energy transfer in cofacial boradiazaindacene (BODIPY) dimers built on a xanthene scaffold

2006-03-13
Saki, N
Dinc, T
Akkaya, EU
Using a rigid xanthene scaffold, a series of boradiazaindacene derivatives were synthesized. In some of these compounds, two boradiazaindacene derivatives were placed cofacially, resulting in significant inter-chromophoric interactions, including excimer emission. A simple modification of boradiazaindacene structure leads to formation of an ICT dye, which has distinct spectral properties. Energy transfer between two BODIPY dyes was demonstrated as well. In addition, the spectral properties of ICT dye can be modulated by the addition of the acid leading to an acid switchable, energy transfer cassette.

Suggestions

Photogalvanic effect in aqueous Methylene blue nickel mesh systems: Conversion of light into electricity
Bayer, IS; Eroğlu, İnci; Turker, L (Wiley, 2001-03-10)
The photogalvanic effect in electrochemical cells, employing aqueous Methylene blue and Fe(II)/Fe(III) couple electrolyte and nickel-mesh electrodes, were experimentally investigated. Five different standard H-cell configurations were set-up by modifying the electrolyte. Long-term open-circuit Voltage measurements were conducted in order to test the stability of the cells. Light on-off reproducibility experiments were also carried out during lengthy cell operations. By comparing experimental quantum yield w...
Asymmetric synthesis of norbornene based 1,4-amino alcohol derivatives and applications in asymmetric transformations
Sünbül, Murat; Tanyeli, Cihangir; Department of Chemistry (2005)
The asymmetric synthesis of cis-1,4-aminoalcohols with norbornene backbone was performed starting with simple and cheap anhydride 30. Quinine-mediated desymmetrization of anhydride 30 with methanol resulted in (2S,3R)-(-)-cis-hemiester 31 (98% e.e.). Chemoselective amination with HMPTA and NH4OH followed by LAH reduction afforded (2S,3R)-(+)-36 and (2S,3R)-(-)-37, respectively. The amidoester (2S,3R)-(-)-32 was transformed into chiral ligand (2S,3R)-(-)-35 with Grignard reaction followed by LAH reduction. T...
Anisotropic Elastic and Lattice Dynamical Properties of Cr2AB MAX Phases Compounds
Gencer, Ayşenur; Yılmaz, İnanç; Bayhan, Ülkü; Sürücü, Gökhan (2019-03-01)
The structural, mechanical and lattice dynamical properties of the MAX Phase borides compounds Cr2AB (A= Al, P, Si) have been investigated using the first principles calculations with the generalized gradient approximation (GGA) based on Density Functional Theory (DFT). The obtained negative formation energies of Cr2AB indicate that these compounds are stable and could be synthesized. Some basic physical parameters such as lattice constants, elastic constants, bulk modulus, Shear modulus, Young’s modulus, a...
QUANTUM-CLASSICAL MIXED-MODE ANALYSIS OF NONLINEARLY COUPLED OSCILLATORS - A TIME-DEPENDENT SELF-CONSISTENT-FIELD APPROACH
YURTSEVER, E; BRICKMANN, J (1992-02-01)
A two-dimensional vibrational system with a strong nonlinear coupling is studied using a quantum-classical mixed mode self-consistent-field approach. The classical equations of motion as well as the time-dependent Schrodinger equation are solved for respective modes under the influence of the average fields generated by the other modes. This vibrational system was previously shown to be chaotic under classical mechanical treatment but quantum mechanical observations pointed out to highly regular behaviour...
Peptide stapling by late-stage Suzuki-Miyaura cross-coupling
Gruss, Hendrik; Feiner, Rebecca C.; Mseya, Ridhiwan; Schroeder, David C.; Jewginski, Michat; Mueller, Kristian M.; Latajka, Rafat; Marıon, Antoıne; Sewald, Norbert (2022-01-01)
The development of peptide stapling techniques to stabilise alpha-helical secondary structure motifs of peptides led to the design of modulators of protein-protein interactions, which had been considered undruggable for a long time. We disclose a novel approach towards peptide stapling utilising macrocyclisation by late-stage Suzuki-Miyaura cross-coupling of bromotryptophan-containing peptides of the catenin-binding domain of axin. Optimisation of the linker length in order to find a compromise between both...
Citation Formats
N. Saki, T. Dinc, and E. Akkaya, “Excimer emission and energy transfer in cofacial boradiazaindacene (BODIPY) dimers built on a xanthene scaffold,” TETRAHEDRON, pp. 2721–2725, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66191.